A5006439164- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle Detector Development and Performance
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Opportunistic and Delay-Tolerant Networks
- Atmospheric Ozone and Climate
- Environmental Monitoring and Data Management
- Impact of Light on Environment and Health
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- IoT Networks and Protocols
- Network Time Synchronization Technologies
- Computational Physics and Python Applications
- Optical Systems and Laser Technology
- Astronomical Observations and Instrumentation
- Radiation Therapy and Dosimetry
- Geophysics and Sensor Technology
- Calibration and Measurement Techniques
- Nonlinear Dynamics and Pattern Formation
Institute of Nuclear Physics, Polish Academy of Sciences
2021-2022
Lomonosov Moscow State University
2020-2021
State Marine Technical University of St. Petersburg
2020-2021
Polish Academy of Sciences
2020-2021
Nizhny Novgorod State Technical University
2020-2021
Irkutsk State University
2020-2021
Czech Technical University in Prague
2020-2021
Joint Institute for Nuclear Research
2020-2021
Institute for Nuclear Research
2020-2021
Comenius University Bratislava
2020-2021
Abstract The Baikal Gigaton Volume Detector (Baikal-GVD) is a km $$^3$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>3</mml:mn> </mml:msup> </mml:math> -scale neutrino detector currently under construction in Lake Baikal, Russia. consists of several thousand optical sensors arranged on vertical strings, with 36 per string. strings are grouped into clusters 8 each. Each cluster can operate as stand-alone detector. layout optimized for the...
The progress in the construction and operation of Baikal Gigaton Volume Detector Lake is reported. detector designed for search high energy neutrinos whose sources are not yet reliably identified. It currently includes over 2000 optical modules arranged on 64 strings, providing an effective volume 0.4 km3 cascades with above 100 TeV. We review scientific case Baikal-GVD, plan, first results from partially built experiment, which largest neutrino telescope Northern Hemisphere still growing up.
Baikal-GVD is a cubic-kilometer scale deep-underwater neutrino detector being constructed in Lake Baikal. It designed to detect neutrinos from $\sim$100 GeV multi-PeV energies and beyond. Detector deployment began Spring 2015. Since April 2020 the includes seven 8-string clusters carrying total 2016 optical modules located at depths 750 1275 meters. By end of first phase construction 2024 it planned deploy 15 clusters, reaching effective volume for high-energy cascade detection 0.75 km$^3$....
High-energy neutrino astronomy is a fascinating new field of research, rapidly developing over recent years. It opens observation window on the most violent processes in universe, fitting very well to concept multi-messenger astronomy. This may be exemplified by discovery high-energy emissions from γ-ray loud blazar TXS 0506+056. Constraining astrophysical fluxes can also help understand long-standing mystery origin ultra-high energy cosmic rays. Astronomical studies neutrinos are carried...
Baikal-GVD is a km$^3$-scale neutrino telescope being constructed in Lake Baikal. Muon and partially tau (anti)neutrino interactions near the detector through W$^{\pm}$-boson exchange are accompanied by muon tracks. Reconstructed direction of track arguably most precise probe attainable Cerenkov telescopes. reconstruction techniques adopted discussed present report. Performance studied using realistic Monte Carlo simulation detector. The algorithms applied to real data from results compared...
The Cosmic-Ray Extremely Distributed Observatory (CREDO) uses the hunt for particle cascades from deep space as a vehicle unique ``bottom-up'' approach to scientific research. By engaging non-specialist public of all ages ``citizen scientists'' we create opportunities lifelong learning individuals well cooperation and sharing common educational tools amongst institutions. discoveries these citizen scientists will feed directly into pioneering new area research oriented on Cosmic Ray...
The Baikal-GVD deep underwater neutrino experiment participates in the international multi-messenger program on discovering astrophysical sources of high energy fluxes cosmic particles, while being at stage deployment with a gradual increase its effective volume to scale cubic kilometer. In April 2021 detector has been reached 0.4 km$^3$ for cascade events above 100 TeV generated by interactions Lake Baikal. alarm system real-time monitoring celestial sphere was launched beginning 2021, that...
The Baikal-GVD is a large scale neutrino telescope being constructed in Lake Baikal. majority of signal detected by the are noise hits, caused primarily luminescence Baikal water. Separating hits from produced Cherenkov light emitted muon track challenging part event reconstruction. We present an algorithm that utilizes known directional hit causality criterion to contruct graph and then use clique-based technique select subset hits.The was tested on realistic detector Monte-Carlo simulation...
The Cosmic-Ray Extremely Distributed Observatory (CREDO) is a project dedicated to global studies of extremely extended cosmic-ray phenomena, the ensembles (CRE), beyond capabilities existing detectors and observatories. Up date research has been focused on detecting single air showers, while search for cosmic-rays, which may spread over significant fraction Earth, scientific terra incognita. key idea CREDO combine (large professional arrays, educational instruments, individual detectors,...
We present data on the Baikal water luminescence collected with Baikal-GVD neutrino telescope. This three-dimensional array of photo-sensors allows observation time and spatial variations ambient light field. report annual increase activity in years 2018-2020. observed a unique event highly luminescent layer propagating upwards maximum speed 28 m/day for first time.
The Cosmic-Ray Extremely Distributed Observatory (CREDO) is an infrastructure for global analysis of extremely extended cosmic-ray phenomena, so-called super-preshowers, beyond the capabilities existing, discrete, detectors and observatories. To date research has been focused on detecting single air showers, while search ensembles events induced by super-preshowers a scientific terra incognita - CREDO explores this uncharted realm. Positive detection would have impact ultra-high energy...
The search for Cosmic-Ray Ensembles (CRE), groups of correlated cosmic rays that might be distributed over very large areas, even the size planet, requires a globally spread and dense network detectors, as proposed by Extremely Distributed Observatory (CREDO) Collaboration. This proposal motivates an effort towards exploring potential using much diversified detection technologies within one system, with units located in hard-to-reach places, where, nevertheless, sensors could work...
Baikal-GVD is a kilometer scale neutrino telescope currently under construction in Lake Baikal. Due to water currents Baikal, individual photomultiplier housings are mobile and can drift away from their initial position. In order accurately determine the coordinates of photomultipliers, equipped with an acoustic positioning system. The system consists network modems, installed along strings uses trilateration modems. This contribution discusses current state Baikal-GVD, including recent...
The Baikal Gigaton Volume Detector (Baikal-GVD) is a km$^3$-scale neutrino detector currently under construction in Lake Baikal, Russia. consists of 2304 optical modules arranged on 64 vertical strings. Further extension the array planned for March 2022. data from partially complete have been analyzed using $χ^2$-based track reconstruction algorithm. After suppression downward-going atmospheric muon background, flux upward-going events observed, dominated by neutrinos. observed good...
Baikal-GVD is a gigaton-scale neutrino observatory under construction in Lake Baikal. It currently produces about 100 GB of data every day. For their automatic processing, the Baikal Analysis and Reconstruction software (BARS) was developed. At moment, it includes such stages as hit extraction from PMT waveforms, assembling events raw data, assigning timestamps to events, determining position optical modules using an acoustic positioning system, quality monitoring, muon track cascade...
Abstract The high-energy muon neutrino events of the IceCube telescope, that are triggered as alerts in one two probability ranks astrophysical origin, “gold” and “bronze”, have been followed up by Baikal-GVD a fast quasi-online mode since September 2020. Search for correlations between GVD reconstructed modes, muon-track cascades (electromagnetic or hadronic showers), time windows ±1 h ±12 does not indicate statistically significant excess measured over expected number background events....
Abstract The Baikal-GVD is a neutrino telescope situated in the deepest freshwater lake world — Lake Baikal. design of trigger system allows also to study ambient light lake. analysis optical activity Baikal water, particularly, time and spatial variations luminescence for data collected years 2018, 2019, 2020 presented. For first we observed highly luminescent layer moving upwards with maximal speed 28 m/day January 2021.
The Baikal-GVD is a neutrino telescope under construction in Lake Baikal. main goal of the to observe neutrinos via detecting Cherenkov radiation secondary charged particles originating interactions neutrinos. In 2021, installation works concluded with 2304 optical modules installed lake resulting effective volume approximately 0.4 km$^{3}$. this paper, first steps development double cascade reconstruction techniques are presented.
Abstract Baikal-GVD (Gigaton Volume Detector) is a neutrino telescope located in pure water of Lake Baikal. At the current stage (season 2021), detector composed 2304 optical modules arranged 8 clusters. In searching for cascade events, light patterns produced via discrete stochastic energy losses along muon tracks create most abundant background. Methods to separate cascade-like events from and cascades single cluster have been developed optimized. One method tries find maximum number track...
The Baikal-GVD neutrino telescope currently consists of 8 clusters 288 optical modules (photodetectors). One cluster comprises strings, each which is subdivided into 3 sections 12 modules. This paper presents the methods time synchronization between different GVD components (optical modules, sections, clusters) and estimations accuracy.
The large-scale deep underwater Cherenkov neutrino telescopes like Baikal-GVD, ANTARES or KM3NeT, require calibration and testing methods of their optical modules. These usually include laser-based systems, which allow to check the telescope responses light for real-time monitoring parameters water such as absorption scattering lengths, show seasonal changes in natural reservoirs water. We will present a method laser system set dedicated tools developed includes specially designed built,...